Question : A saves 18% of his income. If his income increases by 41% and still saves the same amount. Find the percentage increase in his expenditure.
Option 1: 60%
Option 2: 35%
Option 3: 50%
Option 4: 40%
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Correct Answer: 50%
Solution : Given, A saves 18% of his income. His income increases by 41%. Let the initial income be 100. Initial savings = 18 and initial expenditure = 100 – 18 = 82 New income = 100 + 41% of 100 = 141 New savings = 18 (same amount), new expenditure = 141 – 18 = 123 So, increase in expenditure = new expenditure – initial expenditure = 123 – 82 = 41 $\therefore$ Percentage increase in expenditure = $\frac{\text{Increase in expenditure}}{\text{initial expenditure}} × 100$ = $\frac{41}{82} × 100$ = 50% Hence, the correct answer is 50%.
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Question : The ratio of the expenditure and savings of a person is 4 : 3. His expenditure increases by $\frac{1}{4}$th of his initial savings and his income increases by Rs. 300. If his savings remain the same, then what is his initial expenditure?
Option 1: Rs. 1600
Option 2: Rs. 2000
Option 3: Rs. 1000
Option 4: Rs. 1200
Question : The monthly income of a person is INR 15,000. He saves 20% of his income. If his income increases by 10% and his nominal savings remain the same, then what will be his new expenditure?
Option 1: INR 13,000
Option 2: INR 14,500
Option 3: INR 13,500
Option 4: INR 14,000
Question : The monthly income of a person was INR 40,000. He used to save 25% of his income. His nominal income increases by 15% and his nominal expenditure increases by 20%. What is the percentage change in his nominal savings?
Option 1: 7.5%
Option 2: 0%
Option 3: 5%
Option 4: 10%
Question : By selling 35 articles, a shopkeeper gains the selling price of 15 articles. Find his gain percentage.
Option 1: 88%
Option 2: 40%
Option 3: 75%
Option 4: 60%
Question : If the price of onion increases from INR 60 per kg to INR 75 per kg, then by what percentage should a household decrease the consumption of onion so that expenditure remains the same?
Option 1: 40%
Option 2: 25%
Option 3: 20%
Option 4: 30%
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